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Old 11-06-2009, 02:47 PM   #1
fullyadam
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Default 87 YJ Won't Hold Idle

My 87 YJ (straight 6 4.2L) stalls whenever it goes below ~1200 RPM. I did a brief visual inspection of the vacuum hoses in/around the carb and they all seem in good shape. Any idea of what it could be?

Thanks,

Adam

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Old 11-06-2009, 02:49 PM   #2
Vaultzz
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Have you checked your TPS sensor?

actually I'm not even sure if it has one lol idk check for it anyway
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Old 11-06-2009, 05:37 PM   #3
93yjsplash
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Quote:
Originally Posted by fullyadam View Post
My 87 YJ (straight 6 4.2L) stalls whenever it goes below ~1200 RPM. I did a brief visual inspection of the vacuum hoses in/around the carb and they all seem in good shape. Any idea of what it could be?

Thanks,

Adam
Thats most likely the symptoms of jeep putting in the crappiest carb ever.

Ditch your carter bbd and go with a weber or do a mc2100 junkyard swap.

carb and idle problems gone
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